🇧🇷 Weather in Jacareí
Map Overlays:
Hourly Forecast for Jacareí
23:00
12°
41%
00:00
12°
31%
01:00
12°
52%
02:00
12°
22%
03:00
12°
24%
04:00
11°
17%
05:00
11°
17%
06:00
11°
23%
07:00
11°
21%
08:00
12°
21%
09:00
13°
20%
10:00
14°
16%
11:00
16°
13%
12:00
19°
2%
13:00
20°
1%
14:00
20°
2%
15:00
19°
3%
16:00
18°
6%
17:00
16°
7%
18:00
13°
10%
19:00
12°
12%
20:00
11°
10%
21:00
12°
11%
22:00
12°
13%
14-Day Forecast for Jacareí
2026-09-01
Light rain shower
24° /
12°
2026-09-02
Sunny
20° /
11°
2026-09-03
Sunny
28° /
10°
2026-09-04
Sunny
31° /
14°
2026-09-05
Patchy rain nearby
30° /
14°
2026-09-06
Light rain shower
15° /
11°
2026-09-07
Light rain shower
11° /
8°
Additional Forecasts for Jacareí
Air Quality
💨 US EPA Index 1 (Good)
CO (Carbon Monoxide) 176.0 μg/m³
O₃ (Ozone) 60.0 μg/m³
NO₂ (Nitrogen Dioxide) 9.8 μg/m³
SO₂ (Sulphur Dioxide) 3.2 μg/m³
PM2.5 (Fine particles) 6.6 μg/m³
PM10 (Coarse particles) 7.0 μg/m³
Historical Weather
Weather Forecasts for Other Cities in Brazil
Weather in Jacareí — FAQ
Answers refreshed each request based on current conditions in Jacareí.
What is the weather like right now in Jacareí?
Right now in Jacareí, Brazil the temperature is 13.4°C (feels like 11.9°C), with light rain shower. Relative humidity is 94% and wind is 12.2 km/h.
What is today's high and low temperature in Jacareí?
Today's forecast high in Jacareí is 24.0°C and the overnight low is 12.5°C. The diurnal range — high minus low — depends on cloud cover; clear days swing more than overcast ones.
Will it rain in Jacareí today?
The chance of precipitation in Jacareí today is 89%. Forecast accuracy is highest within the next 6 hours and decreases steadily out to 14 days.
How often does the weather here update?
Current observations refresh every 15-60 minutes from the nearest monitoring stations operated by national meteorological agencies. The hourly forecast updates approximately every hour; the 7- and 14-day outlook is recomputed several times per day.
What does 'feels like' temperature mean?
Feels-like (apparent) temperature accounts for humidity, wind chill and direct sunshine — variables that change how the human body perceives heat or cold. On hot, humid days it can be 3-7°C above the actual reading; on cold windy days it can be 5-15°C below.
Why does the temperature in Jacareí differ from nearby cities?
Even short distances can change temperatures noticeably. Jacareí's reading reflects altitude, proximity to large bodies of water, urban heat island effects, and the exact location of the monitoring stations supplying the data. Coastal cities are typically milder and more humid than inland equivalents.